mini speaker for ipad ,iphone,MP4ect
mini speaker have USBconnector
Frequency response:150-18KHz
with built-in FM radio

 Out put:RMS 6W(3W*2)

Frequency response:150-18KHz(±3dB)

Signal and Noise of Power amplifier:over80dB

 Loud speaker:1.77 inch(external diameter 45mm) magnetic resistant 4 Ohms

U Disk,SD/MMC  Card Line in:configure 3.5mm stereo's plugs,U Disk,SD/MMC Card

Power supply:Outset Litheium battery,5V/1000mA AC ADAPTER,PC USB

Lithium battery input:3.7V 

 Charge voltage: 4.2-5V

Battery capacity:500mAh 

 Built-in MP3 player that can play SD / MMC memory card MP3 player music files, also read U disk

remote control